Mitsubishi FX1N-40MC PLC Digital I/O Module | Replacement, Equivalent & Selection Guide
The Mitsubishi FX1N-40MC is a compact, high-performance programmable logic controller (PLC) main unit from Mitsubishi Electric’s FX1N series. Designed for small-to-medium automation tasks, it integrates 24 digital inputs and 16 digital outputs (relay or transistor) in a single housing, making it a reliable choice for machine control, conveyor systems, and process automation. This page provides full technical specifications, compatible replacement models, and a structured selection guide to help engineers and procurement teams make the right sourcing decision.
Technical Specifications
| Parameter | Specification |
|---|---|
| Model | FX1N-40MC |
| Brand | Mitsubishi Electric |
| Series | MELSEC FX1N |
| I/O Points | 40 (24 Inputs / 16 Outputs) |
| Output Type | Relay / Transistor (sink/source) |
| Power Supply | 100–240 VAC or 24 VDC |
| Program Memory | 8,000 steps |
| Communication | RS-422 (built-in), optional RS-232C/RS-485 |
| Expansion | Up to 128 I/O via expansion modules |
| Operating Temp. | 0°C to 55°C |
| Protection Rating | IP20 |
| Weight | Approx. 650 g |
| Certifications | CE, UL, cUL |
Compatible Replacement & Equivalent Models
The following models are commonly evaluated as direct or functional replacements for the FX1N-40MC. Always verify I/O count, output type, and communication requirements before substitution.
| Model | Brand | I/O Points | Compatibility Level | Notes |
|---|---|---|---|---|
| FX1N-40MR-001 | Mitsubishi | 40 | Direct (Relay Output) | Same series, relay output variant |
| FX1N-40MT-001 | Mitsubishi | 40 | Direct (Transistor Output) | Same series, transistor output variant |
| FX2N-48MR-001 | Mitsubishi | 48 | Functional Upgrade | Higher I/O, same FX family programming |
| FX3G-40MR/ES | Mitsubishi | 40 | Upgraded Replacement | Newer generation, enhanced performance |
| FX5U-32MR/ES | Mitsubishi | 32 | Next-Gen Replacement | iQ-F platform, Ethernet built-in |
| S7-1200 CPU 1212C | Siemens | 14 DI/10 DO | Cross-Brand Alternative | Requires reprogramming; TIA Portal |
| DVP40EH00R3 | Delta | 40 | Cross-Brand Alternative | Cost-effective; IEC 61131-3 compatible |
Why Choose the Original FX1N-40MC
- Proven Reliability: Millions of units deployed globally in industrial environments since the early 2000s.
- Native Compatibility: Seamless integration with Mitsubishi FX expansion modules, HMIs (GOT series), and SCADA systems.
- GX Works2/GX Developer Support: Full programming support with Mitsubishi’s native software toolchain.
- Compact Footprint: DIN-rail mountable with minimal panel space requirements.
- Spare Parts Ecosystem: Wide availability of compatible I/O expansion, communication, and analog modules.
Typical Applications
- Conveyor and material handling systems
- Packaging and labeling machines
- Injection molding machine control
- HVAC and building automation
- Water treatment and pump control
- Assembly line sequencing
- Small-scale process automation
System Compatibility
The FX1N-40MC is compatible with the following Mitsubishi ecosystem components:
- Expansion I/O: FX1N-8EX, FX1N-8EYR, FX2N-16EX, FX2N-16EYR
- Analog Modules: FX1N-2AD-BD, FX1N-1DA-BD
- Communication Boards: FX1N-232-BD, FX1N-485-BD, FX1N-CNV-BD
- HMI: Mitsubishi GOT1000/GOT2000 series via RS-422
- Programming Software: GX Works2, GX Developer
- SCADA: Compatible via Modbus RTU or dedicated Mitsubishi drivers
Selection Guide
Use the following criteria to determine whether the FX1N-40MC is the right choice for your application:
| Requirement | Recommended Model |
|---|---|
| Need exact FX1N-40MC replacement (relay output) | FX1N-40MR-001 |
| Need exact FX1N-40MC replacement (transistor output) | FX1N-40MT-001 |
| Need more I/O with same FX programming | FX2N-48MR or FX3G-40MR |
| Upgrading to modern platform with Ethernet | FX5U-32MR/ES or FX5U-64MR/ES |
| Budget-sensitive cross-brand alternative | Delta DVP40EH00R3 |
| Siemens ecosystem integration required | Siemens S7-1200 CPU 1212C |
Quality Assurance & Sourcing
- Authentic Parts: All units sourced from authorized distributors or verified surplus channels with full traceability.
- Inspection: Each module undergoes visual and functional inspection before shipment.
- Warranty: 12-month warranty against manufacturing defects.
- Packaging: Original or equivalent anti-static packaging with protective foam inserts.
- Documentation: Datasheet and test report available upon request.
How to Order
- Confirm your required output type: Relay (MR) or Transistor (MT/MES).
- Verify power supply voltage: AC (100–240V) or DC (24V).
- Check expansion module requirements for your application.
- Add to cart or contact us for bulk pricing and lead time.
- For OEM/project quantities (>5 units), request a formal quotation via email.
📧 support@konmask.com | 📞 +0086 19859288691
Replacement & Compatibility FAQ
Q: Is the FX1N-40MC still in production?
A: The FX1N series has been superseded by the FX3G and FX5U series. However, genuine units remain available as new-old-stock (NOS) or refurbished through authorized distributors like Konmask.com.
Q: Can I replace FX1N-40MC with FX3G-40MR without reprogramming?
A: In most cases, yes. The FX3G is backward-compatible with FX1N ladder programs. Minor adjustments may be needed for special function modules.
Q: What is the difference between FX1N-40MC and FX1N-40MR?
A: The suffix “MC” typically denotes a specific regional or OEM variant. The FX1N-40MR is the standard relay-output model. Verify the exact suffix with your original documentation.
Q: Does Konmask.com offer technical support for integration?
A: Yes. Our engineering team can assist with wiring diagrams, module selection, and compatibility verification. Contact us before purchase for complex applications.
Q: Can I use Delta DVP40EH as a drop-in replacement?
A: Electrically compatible in many cases, but requires reprogramming in Delta’s WPLSoft/ISPSoft environment. Not a drop-in replacement for existing Mitsubishi programs.
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